Abdominal exerciser



FIG. 1 is a perspective view of an abdominal exercise showing my design;

FIG. 2 is a side view thereof, which is the identical mirror image ofthe opposing side thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a front view thereof; and,

FIG. 6 is a rear view thereof.

The ornamental design for an abdominal exerciser, as shown anddescribed.